The Hermes Agent plugin calls ctx.inject_message() unresponsive, first check whether the running environment is CLI. The official plugin documentation clearly states that inject_message only have CLI references available in CLI mode; False may be returned in gateway mode.
What exactly can it do?
inject_message Inject external events into the current conversation: when the Agent is idle, it queues up for the next user input; When the Agent is running, it interrupts the current operation as if the user interrupted. This is suitable for local controls, observers, event plugins, not for all gateway scenarios.
Common misuse
- Expect it to plug directly into CLI sessions in Telegram, Discord, Slack gateways.
- No check return value, no knowledge of failure.
- Inject high-frequency messages when the agent is busy, causing the current task to be interrupted repeatedly.
- Using non-user role content as a prompt results in just being prefixed into the conversation.
Test the plug-in in your local hermes or hermes --tui before putting it on the gateway. If it works in the CLI and the gateway doesn't, it's an environment boundary issue, not a message content issue.
